Combination spreader and form-tie.



e. E. McDONALD, In. COMBINATION SPREADER AND FORM TIE.

APPLICATION FILED MAR. 30. I917.

1,258, 130. Patented Mar. 5, 1918;

Q FIGURENOA. SECTION AA.

er rea -an i canton.

GEORGE EDWARD MCDONALD, JR., OF CINCINNATI, OHIO.

COMBINATION SPREADER AND FORM-TIE.

Application filed March 30, 1917.

To all whom it may concern:

Be it known that I, GEORGE EDWARD Mo- DONALD, Jr., a citizen of the United States, residing at No. 3043 Hackberry street, in the city of Cincinnati, county of Hamilton, and State of Ohio, have invented a new and useful device, being a Combination Spreader and Form-Tie, of which the following is a specification.

My invention relates to a device consisting of a combination of what is known in concrete and composite stone work as a. spreader with what is known as a form tie, the objects of which are to spread or space, with uniformity, the forms or molds for concrete, or other types of composite stone work, while at the same time drawing up the sides of the forms or molds to a true line, and holding and tying them tight and uniform; to reinforce various kinds of concrete or composite stone work; to provide a means of concealing the ends of the tie wires after the molds or forms have been removed following the setting of the concrete or other material.

The application of this device is commonly known as spreading and tying, and is most extensively used in the construction of walls, beams, supports and various forms of concrete and composite stone work.

I attain these objects by the combination spreader and form tie, which consists of a composite bar of sufficient length to establish or to negotiate the width or thickness of the wall, beam or other concrete or composite work in prospect. It has recessed ends. Running through the interior of this bar longitudinally, are two or more tie wires, protruding divergently at either end, and of a sutlicient length to eXtend through the frame form or mold, out around the uprights, scantling or other skeleton members to which the form or mold is nailed or attached, and the two ends of the wires tied. The tie wires may be intertwined in the body of the spreader if desired. These devices are distributed throughout the work in various places, and in sufiicient number to effec- Specification of Letters Patent.

Patented Mar. 5, 1918.

Serial No. 153,722.

means of a wrench, thus twisting the wiresv and thereby causing the sides of the form to be drawn up close and tight to the desired uniform dimensions. The fresh concrete or other composition is then filled in the form around the spreaders, and the spreaders become part of and are assimilated by the whole body of the work. Following the setting of the concrete or other composition, and after the tie wires are broken and the mold or form removed, the tie wires are clipped off short, as far inside the recess as possible, and the stubs or ends bent over, so as to lie entirely within the recess at either end of the spreader. The recesses are then filled up with material similar to that of the main body of the'work, and smoothed ofi fiush with the general surface of the main body.

Reference is made to the accompanying drawing. Figure l is a projection of the combination spreader and form tie, showing how the bar is molded around the tie wires. Fig. 2 shows the combination spreader and form tie in place, before the filling in process has begun. Fig. 3 is an end view of the combination spreader and form tie. Fig. 4 is a longitudinal section of the spreader.

Mydevice is more particularly described as follows: A bar molded outv of concrete or other composition, of a square octagonal or other practical shape of sufficient length to establish, or to negotiate the width or thickness of the concrete wall or other work in prospect, (see 1 Figs. 1 and 4) having recessed ends, (2 Fig. 4). The composition is molded around two or. more wires known as tie wires (3 Fig. 4-), which divergently protrude at either end a and 5 Fig. a) and of sufficient length to extend through the frame mold or form (6 Fig. 2) out around the upright support of the frame (7 Fig. 2) and the ends twisted or tied there (8 Fig. 2). The spreader is then turned around or rotated with a wrench, twisting the wires and thus tightening the sides of the form or mold (6 Fig. 2) and drawing them up to the ends of the spreader (10 Fig. 2), thus establishing the width of the wall or other construction. After the fresh concrete is placed in the mold and has set sulficiently, the wires around the supports are then broken and the frame work removed. The tire wires are clipped off as sh ort as possible inside the recess at either end of the spreader, and bent into the recess as indicated by dotted line (11 Fig. l), the spreader by that time having been assimilated by the main body. The recesses are then filled up with material similar to that of the main body, and smoothed off even with the general surface.

A spreader molded in octagonal shape can be more easily manipulated and turned because the wrench can be attached from almost any angle when it is desired to rotate the spreader, but it can be made in almost any other practical shape. My combination spreader and form tie has many advantages over other spreaders as well as other form ties. The device can be cheaply and economically made. Its ease of application its cheapness and economy are noteworthy features. Being made of the same or similar composition as the wall or main work, it becomes a part of the main body and is assimilated by it, thus eliminating the necessary loss of time of removal, whlch is neces sary now with other spreaders as the work approaches them. The recessed ends permit the cutting oil of the wires below the general surface of the work and covering up of same, thus preventing the subsequent staining of the walls, which so often happens now with systems generally used where :2.

concrete and molded around wires which protrude at either end of the bar.

2. In a device of the character described, a concrete bar, having recessed ends and wires running longitudinally through the bar and protruding at either end.

3. A concrete bar having recessed ends with wire running longitudinally through the interior of the bar and protruding at either end.

4. A device of the character described, comprising the combination of a spreader and form tie, being a concrete bar with recessed ends having wire embedded longitudinally therein and protruding at either recessed end.

GEORGE EDWARD McDONALD, JR.

copies of thi: patent may be obtained for five cents each, by addressing the Commissioner or Patents,

Washington, D. G. 

